Sisay, Weatherlight Captain gets +1/+1 for each color among other legendary permanents you control.
WUBRG: Search your library for a legendary permanent card with converted mana cost less than Sisay's power, put that card onto the battlefield, then shuffle your library.
Near Mint - £1.80
Lightly Played - £1.50
Moderately Played - £1.30
Heavily Played - £0.90
Damaged - £0.60
Near Mint Non English - £1.80
Lightly Played Non English - £1.50
Moderately Played Non English - £1.30
Heavily Played Non English - £0.90
Damaged Non English - £0.60